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Finding the Fourth Proportional to 99,260.76, 136,979.84 and 54,548.76

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Solution

The fourth proportional to 99,260.76, 136,979.84 and 54,548.76 is: 75,277.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,260.76 : 136,979.84 = 54,548.76 : x
  2. Step 2: Convert to fraction form
    99,260.76/136,979.84 = 54,548.76/x
  3. Step 3: Cross multiply
    99,260.76x = 136,979.84 × 54,548.76
  4. Step 4: Simplify right side
    99,260.76x = 7,472,080,417.00
  5. Step 5: Solve for x
    x = 7,472,080,417.00/99,260.76
  6. Step 6: Final answer
    x = 75,277.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.